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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2023-10-18 08:16:58 +0200 |
|---|---|---|
| committer | Chanwoo Choi <cw00.choi@samsung.com> | 2023-10-19 20:45:39 +0900 |
| commit | 076b0597f5b6fbec47cddedf9b39d864938a365c (patch) | |
| tree | db366330eba6b49836bc14c50d5ff068d572735c /drivers/devfreq | |
| parent | d3b0f6ab0e3374820b7ab7f755a28e7a65ebf2b4 (diff) | |
| download | lwn-076b0597f5b6fbec47cddedf9b39d864938a365c.tar.gz lwn-076b0597f5b6fbec47cddedf9b39d864938a365c.zip | |
PM / devfreq: rockchip-dfi: Add RK3568 support
This adds RK3568 support to the DFI driver. Only iniitialization
differs from the currently supported RK3399.
Link: https://lore.kernel.org/all/20231018061714.3553817-11-s.hauer@pengutronix.de/
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq')
| -rw-r--r-- | drivers/devfreq/event/rockchip-dfi.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 12f909687923..571d72d1abd1 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -23,6 +23,7 @@ #include <soc/rockchip/rockchip_grf.h> #include <soc/rockchip/rk3399_grf.h> +#include <soc/rockchip/rk3568_grf.h> #define DMC_MAX_CHANNELS 2 @@ -211,10 +212,36 @@ static int rk3399_dfi_init(struct rockchip_dfi *dfi) return 0; }; +static int rk3568_dfi_init(struct rockchip_dfi *dfi) +{ + struct regmap *regmap_pmu = dfi->regmap_pmu; + u32 reg2, reg3; + + regmap_read(regmap_pmu, RK3568_PMUGRF_OS_REG2, ®2); + regmap_read(regmap_pmu, RK3568_PMUGRF_OS_REG3, ®3); + + /* lower 3 bits of the DDR type */ + dfi->ddr_type = FIELD_GET(RK3568_PMUGRF_OS_REG2_DRAMTYPE_INFO, reg2); + + /* + * For version three and higher the upper two bits of the DDR type are + * in RK3568_PMUGRF_OS_REG3 + */ + if (FIELD_GET(RK3568_PMUGRF_OS_REG3_SYSREG_VERSION, reg3) >= 0x3) + dfi->ddr_type |= FIELD_GET(RK3568_PMUGRF_OS_REG3_DRAMTYPE_INFO_V3, reg3) << 3; + + dfi->channel_mask = BIT(0); + dfi->max_channels = 1; + + return 0; +}; + static const struct of_device_id rockchip_dfi_id_match[] = { { .compatible = "rockchip,rk3399-dfi", .data = rk3399_dfi_init }, + { .compatible = "rockchip,rk3568-dfi", .data = rk3568_dfi_init }, { }, }; + MODULE_DEVICE_TABLE(of, rockchip_dfi_id_match); static int rockchip_dfi_probe(struct platform_device *pdev) |